public class Lesson03变量 {
    public static void main(String[] args) {
        //int a,b,c;
        int a=1;
        String name ="孙曼乔";
        char x ='X';
        double pi = 3.14;
        System.out.println(a);
        System.out.println(name);
        System.out.println(x);
        System.out.println(pi);



    }
}